植入FBG的碳纤维复合材料全寿命周期结构状态研究

将光纤光栅传感器与碳纤维复合材料进行一体化集成设计,在碳纤维复合材料内部植入光纤光栅传感器,验证了埋置工艺的可行性,确认了其可实时监测环境温度值,研究了植入光纤光栅传感器后碳纤维复合材料的结构强度变化及光纤光栅的信号传递率。试验结果表明:碳纤维复合材料埋入光纤光栅传感器前后结构强度变化率小于10%,光纤应变信号传递率高于90%,光纤光栅传感器可以作为碳纤维复合材料结构进行从加工固化、使用过程直至破坏的全寿命周期的结构强度监测的有效手段。

Whole Life Cycle Structure of Carbon Fiber Composites Implanted With FBG

In this paper, the fiber Bragg grating sensor and carbon fiber composite materials were integratedly designed, by embedding the fiber Bragg grating sensor within the carbon fiber composite materials. The feasibility of the embedded technology was verified, the design was confirmed to real-time monitor the environment temperature. The structure strength change of the carbon fiber composite material after embedded fiber Bragg grating sensor as well as the fiber Bragg grating signal transmission rate was studied. The results show that the structure strength change rate of the carbon fiber composite materials before and after embedding fiber Bragg grating sensor is less than 10%, the strain signal transmission rate is above 90%. The fiber Bragg grating sensors can be used as an effective means of monitoring the whole life cycle structural strength of the carbon fiber composite materials from processing, using until failure.